A5025260085- Magnetic properties of thin films
- Magneto-Optical Properties and Applications
- Magnetic Properties and Applications
- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Magnetic and transport properties of perovskites and related materials
- Conducting polymers and applications
- Multiferroics and related materials
- Physics of Superconductivity and Magnetism
- Chalcogenide Semiconductor Thin Films
- Advanced Condensed Matter Physics
- Quantum and electron transport phenomena
- Semiconductor Quantum Structures and Devices
- Organic Light-Emitting Diodes Research
- Magnetic Properties and Synthesis of Ferrites
- EEG and Brain-Computer Interfaces
- Quantum Dots Synthesis And Properties
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- Electronic and Structural Properties of Oxides
- Photonic and Optical Devices
- Gaze Tracking and Assistive Technology
- Chaos control and synchronization
- Microstructure and Mechanical Properties of Steels
- Magnetic Properties of Alloys
Fudan University
2015-2024
Tsinghua University
2006-2024
China Academy of Transportation Sciences
2024
State Key Laboratory of Surface Physics
2024
Beijing Tsinghua Chang Gung Hospital
2019-2024
China Medical University
2023
Hainan University
2023
Beijing Aerospace Flight Control Center
2023
Northeastern University
2009-2022
Universidad del Noreste
2022
All-polymer organic solar cells offer exceptional stability. Unfortunately, the use of bulk heterojunction (BHJ) structure has intrinsic challenge to control side-chain entanglement and backbone orientation achieve sophisticated phase separation in all-polymer blends. Here, we revealed that P–i–N can outperform BHJ ones with a nearly 50% efficiency improvement, reaching power conversion approaching 10%. This also provide an enhanced internal electric field remarkably stable morphology under...
Abstract All‐solid‐state lithium batteries (ASSLBs), exhibiting great advantages of high energy density and safety, are proposed to be the next generation storage system. However, successful commercialization garnet‐based ASSLBs is hindered by poor contact between solid‐state electrolytes (Li 6.25 Ga 0.25 La 3 Zr 2 O 12 , LGLZO) anode, as well low critical current (CCD). Herein, an indium tin oxide (ITO) layer prepared on LGLZO ultrasonic spraying technique, where ITO reacts with molten form...
Abstract The development of highly efficient active integrated photonic circuits is crucial for advancing information and computing science. Lead halide perovskite semiconductors, with their exceptional optoelectronic properties, offer a promising platform such devices. In this study, micro multifunctional devices were fabricated on monocrystalline CsPbBr 3 thin films using top-down etching technique focused ion beams. etched microwire exhibited high-quality laser that could serve as light...
The sol-gel synthesis of Co–RE (RE=Ho, Er, Tm, Yb, Lu) ferrite nanocrystalline films was accomplished on monocrystalline silicon substrates, and the influence RE ions structure, magnetic, magneto-optical (MO) properties resultant ferrites examined. results obtained reveal that, when x⩽0.2, CoFe2−xRExO4 have pure spinel phase with slightly enlarged cell constants lattice distortion due to large radii ions. tend decrease room-temperature magnetization as well Curie point products, may a...
A fiber-type perovskite solar cell is fabricated by wrapping a conducting carbon nanotube sheet onto crystal-deposited strip electrode.
Abstract Organic solar cells (OSCs) based on small molecular acceptors (SMAs) have made great development with a power conversion efficiency (PCE) over 16% due to the design of novel materials and advances in device preparation technology. This work fabricates two bulk‐heterojunction photovoltaic devices containing same wide‐bandgap donor PM6, respectively, matched popular Y6 ITIC SMAs. The PM6:Y6‐based achieves much higher PCE 15.21% than PM6:ITIC‐based 9.02%. On basis comparisons...
Nanocrystalline CoFe1.9RE0.1O4 [rare earth (RE=Gd,Tb,Dy)] films have been prepared by the sol–gel route, and their polar magneto-optical (MO) Kerr rotation ellipticity determined in spectral range of 4000–8000 Å. The are composed nanometer grains with spinel structure. RE doped cobalt ferrites found to dramatic changes magnetic MO properties, increases coercive force enhancement Tb3+ sample.
Sb2Te3/GeTe bilayer films with different thickness ratios have been deposited on silicon substrate and fused quartz substrates by radio-frequency magnetron sputtering. Linear optical properties bandgap of sample were investigated firstly. With the ratio changes, their transmittance differences decrease a lot at wavelength range 1500–1600 nm. Besides, modulation depth saturable absorption samples will increase along to incident power density or ratio. Besides density, interface states between...
The multi-locomotion robot (MLR), including bionic insect microrobot, animal and so on, should choose different locomotion modes according to the obstacles it faces. However, under modes, power consumption, moving speed, falling risk of MLR are different, in most cases, they mutually exclusive. This paper proposes a path planning algorithm for based on multi-objective genetic with elitist strategy (MLRMOEGA), which has four optimization objectives: time risk, smoothness. We propose two...
The impact of antisite disorder $x$ on the intrinsic Gilbert damping ${\ensuremath{\alpha}}_{0}$ in well-ordered $L{1}_{0\phantom{\rule{0.16em}{0ex}}}$ FePt films is investigated by time-resolved magneto-optical Kerr effect. variation mainly affects electron scattering rate $1/{\ensuremath{\tau}}_{\mathrm{e}}$, while other leading parameters remain unchanged. experimentally observed linear dependence $1/{\ensuremath{\tau}}_{\mathrm{e}}$ indicates that spin relaxation through interband...
Abstract Optical control of spin is central importance in the research ultrafast spintronic devices utilizing dynamics at short time scales. Recently developed optical approaches such as demagnetization, spin-transfer and spin-orbit torques open new pathways to manipulate through its interaction with photon, orbit, charge or phonon. However, these processes are limited by either long thermal recovery low-temperature requirement. Here we experimentally demonstrate coherent precession via...
A series of In<sub>2</sub>Te<sub>3</sub> thin films with various thicknesses was prepared on fused quartz substrate using a radio-frequency magnetron sputtering method.
Abstract Improved charge generation via fast and effective hole transfer in all‐polymer solar cells (all‐PSCs) with large highest occupied molecular orbital (HOMO) energy offset (Δ E H ) is revealed utilizing ultrafast transient absorption (TA) spectroscopy. Blending the same nonfullerene acceptor poly{[ N , ′‐bis(2‐octyldodecyl)‐naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl]‐alt‐5,5′‐(2,2′‐bithiophene) (N2200) three different donor polymers produces blends Δ . The selective excitation of...
Abstract The time-resolved magneto-optical (MO) Voigt effect can be utilized to study the Néel order dynamics in antiferromagnetic (AFM) materials, but it has been limited for collinear AFM spin configuration. Here, we have demonstrated that Mn 3 Sn with an inverse triangular structure, quench of by ultrafast laser pulses result a large modulation. modulated angle is significantly larger than polarization rotation due crystal-structure related linear dichroism and MO Kerr arising from...
The temperature dependence of the Gilbert damping and magnetic anisotropy are investigated in L21 Co2FeAl films epitaxially grown on GaAs (001) substrate by time resolved magneto-optical Kerr effect. We found that in-plane biaxial increases more than 90% with decreasing from 300 K to 80 K, which is mainly due strong variation magneto-elastic coefficients. In contrast, intrinsic rises only about 10%, attributed reduction electron phonon scattering rate, independent strain-induced spin-orbit...
The interfacial spin state of the multiferroic heterostructure PbZr0.52Ti0.48O3/La0.67Sr0.33MnO3 and its dependence on ferroelectric polarization is investigated with magnetic second-harmonic generation at 78 K. alignment Mn ions in first unit cell layer heterointerface can be tuned from ferromagnetic to antiferromagnetic exchange coupled, while bulk magnetization remains unchanged. Multiple domains both phases coexist as switched. results will help promote development new interface-based...
We report the large-scale transfer process for monocrystalline CsPbBr3 thin films prepared by chemical vapor deposition (CVD) with excellent optical properties and stability. The is robust, simple, effective, in which could be transferred to several substrates effectively avoid or physical fabrication processes damage perovskite surface. Moreover, endows atomically clean electronically flat interfaces. utilize this realize optoelectronic devices, including a photonic laser threshold of 61...
We report the picosecond spin current generation from interface between a heavy metal and vicinal antiferromagnet insulator ${\mathrm{Cr}}_{2}{\mathrm{O}}_{3}$ by laser pulses at room temperature zero magnetic field. It is converted into detectable terahertz emission in via inverse Hall effect. The interfaces are apparently source of current, as evidenced proportional signals to angle. attribute origin transient moment generated an interfacial nonlinear magnetic-dipole difference-frequency...